That may be so, although a VM on AWS is measurably slower than the same program running on my Xeon from 2013 or so.
But, more generally, the problem is that tech stacks are an awful amalgamation of uncountable pieces which, taken by themselves, "don't add much overhead". But when you add them all together, you end up with a terribly laggy affair; see the other commenter's description of a web page with 30 dishes taking forever to load.
But, more generally, the problem is that tech stacks are an awful amalgamation of uncountable pieces which, taken by themselves, "don't add much overhead". But when you add them all together, you end up with a terribly laggy affair; see the other commenter's description of a web page with 30 dishes taking forever to load.